Rotating camera view in Grease Pencil Draw Mode in Blender 2.8
As others have already pointed out that Shift + Numpad 4 and Shift + Numpad 6 rotate the view by increments. This is ok and already works on the default set up.
For me, the better solution was to go to Edit &gt; Preferences Keymap under Grease Pencil &gt; Grease Pencil(global) press Add New. From here set your preferred key binding (I chose Middle Mouse Button ) then click the little &quot;expand&quot; arrow, add any modifiers (I chose Shift + Alt) and type `view3d.view_roll&quot; into the command box.
And that's it, this allows arbitrary rotation while holding Shift + Alt + Middle Mouse Button . To reset press Shift + Numpad 1.